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R. NITCH.

DRIER FOR PRINTING PRESSES.

APPLICATION man 001.21. 1919.

1,360,012. Patentefllhv. 23,1920.

2 SHEET (12% Xvi/Jo R. NiTCH.

DRIER FOR PRINTING PRESSES.

APPLICATION FILED OCT-21, 1919.

gssn m Patented Nov. 23,1920

2 SHEETS-SHEET 2'- EQWVVVVVVNQ RUDOLZE NITCI-I, F CLEVELAND, OHIO.

DRIER FOB PRINTING-PRESSES.

Specification of Letters Patent.

Patented Nov. 23, 1920.

Application filed October 27, 1919. Serial No. 333,806.

To all whom it may concern 'Be it known that I, Rnoonr Nrrcn, a citi- Zen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Driers for Printinglresses, of which the following is a full,

clear, and exact description, reference being had to the accompanying drawings.

An object of this invention is to associate with a printing press a heating element de signed to dry freshly applied ink on printed sheets, as wellas to diminish the static electricity thereon. A more specific object is to so arrange'this heating element that it may be conveniently associated with various formsof printing presses now in use and be so constructed that it avoids burning or scorching of the sheets, while being very effective in its action. Still other objects include the arrangement of the device so that it may be simple in its construction and capable of being cheaply manufactured, and

an automatic feeder and having my invention applied thereto; Fig. 2 is a side elevation of the heating and drying element; Fig. 3 is a plan of the same; Fig. 4 is a longitudinal section through the drying element; and Fig. '5 is a transverse section of the same.

. In the use of the printing presses, particularly those of the type known as job presses, the stacking of the printed sheets results in slow drying and difficulties due to the offsetting, spreading or smud'ging of the ink. It has been found that if the sheets as 7 they arewithdrawn from the platen move across a heating element of suificiently high temperature that this ink may be set, or

- dried to an extent, avoiding this difficulty,

and-the troublesome static electricity is dissipated. Heretofore, however, in attempting touse heating elements of various characters many difiiculties have been encountered, among which is the danger of burning the sheets as well as the liability of burning the operators hands. My invention has been proven by experience to eliminate these difficulties. preferred form of the invention which is illustrated in the drawings, will now be described.

In Fig. 1 is shown a job press, which is illustrative of any form of printing press. and in which A indicates a side frame member carrying the usual platen B. Any suitable mechanism, not shown, may present this platen to the type D. The usual rotary inking plate is illustrated at G. The type, inking plate and associated mechanism are carried on a pivoted frame K, which is operated by the usual connecting link L be tween the frame and a crank pin on the gear M. As the sheets are withdrawn from the platen they may be stacked upon receiving support N. The drawing shows an automatic feeder P of the Miller type below and to the rear of the support N.

In the use of a printing press of the type just described my heating and drying device is positioned at the front of the support N, preferably substantially as shown in Fig. 1 at 10, where it is removably secured by the clips 11 to the frame carrying the receiving support.

-Referring now to the preferred construction of the heating device. as illustrated in Figs. 2 to 5 inclusive: 12 and 13 indicate two long metal side members secured to-' gether by screws or bolts 14 passing through transverse distance pieces 15, 16 and 17 made of asbestos or similar insulating and heat-resisting material. There is thus provided a long rectangular box closed at its sides and ends and open at its top bottom.

The transverse end members'lG and 17 are preferably located at the extreme ends and of the device, while the intermediate trans- I verse members 15 are preferably equally spaced from each other and the end ones thereof are comparatively close to the end walls 16 and 17, respectively.

The heating element is shown as a wire 20 of high resistance material arranged in a continuous coil and lying in two reaches in the upper portionof the device, extending through a series of holes 21 in the various intermediate partitions. The electric terminals are secured to the end member 17, be ing designated 28 and 24. The heating element extends horizontally from one of the terminals as :23, adjacent to the one edge of the internal chamber of the device to a position between the end-most partition 15 of the end 16, where it loops across and returns in similar position adjacent to the other side of the device, the end of the element being secured to the other electric terminal 24. These terminals 23 and 24 may be round studs adapted for engagement by suitable spring clips from a flexible conductor.

\Vhen my device is secured into place, as illustrated in Fig. 1, its vertical open nature provides a series of flues to cause air heated by the electric element 20 to pass upwardly and act on the sheet of paper as it passes from the printing point to the stack. This operates to dry the ink on the paper with out danger of burning it. The heating also reduces the static electricity of the sheet, which has been troublesome at times, and the edge of the metallic side with which the paper contacts conducts such electricity away. The partitions 15, in addition to supporting the wire, prevent the sheets of paper bending down and coming too close to the hot wire as they pass across it. The side 13 may be made higher than the side 12 and the partitions correspondingly inclined at their tops as shown in Fig. 5 to enable the heating element to be substantially parallel with the plane of travel of the paper.

The device is preferably provided with a handle 30, the shank 31 of which is secured to one of the side members of the heater. This provides convenient means for putting it in place or removing it, when hot. Incidentally it enables the structure to be used as a heater in other places about the press when desired, for instance, in softening the ink rollers in cold weather.

I claim":

1. The combination with a printing couple, of a support for receiving printed sheets, and an electric heating element arranged to radiate heat to the printed sheet as it is moved from the printing couple to 5 said support.

2. A combination with a job printing press having a paper receiving support adjacent the' platen, of a heating element adapted to throw heat on to the paper as it is removed from the platen to the support and at such height with. relation thereto that the paper must pass in proximity with the element and cross the same as it is removed from the platen to the support.

3. A combination with a printing couple, of means for holding the printed sheets adjacent thereto, and an electric heating device comprising a long, narrow member having a heating element adapted to radiate heat downwardly and positioned between the couple and said means.

4-. A combination with a printing couple, of a platform for holding the printed sheets adjacent thereto, and a heating element comprising a long, narrow member having a heating element, and adapted to radiate heat upwardly and positioned between the couple and said platform, and having transverse members preventing the paper coming too close to the heating element.

5. A combination with a printing couple, of an adjacent platform to receive the printed sheets, and a heating device comprising a long boxlike member open above and below and positioned between the couple and said platform at such a height that the paper passes in close proximity thereto, and heating means within said boxlike member below the top thereof.

6. A combination with a printing couple, of an adjacent platform to receive the printed sheets, and a heating device comprising a box-like member positioned between the couple and said platform at such a height that the paper passes in close proximity thereto, an electric heating element within said member and below the top thereof, and transverse members of insulating material positioning said element.

7. A combination with a printing couple of an adjacent platform to receive the printed sheets. a box-like member positioned between the couple and said platform at such height that the paper passes in close proximity thereto, and a heating resistance wire within said member below the top thereof.

8. A combination with a printing couple, a platform for holding the printed sheets adjacent thereto, and of a heating element comprising a long, narrow member, a heating wire therein adapted to radiate heat upwardly. and transverse members preventing the paper coming too close to the heating element.

9. A combination with a printing couple, a platform for holding the printed sheets adjacent thereto, and of a heating device comprising a long narrow member, a heat ing wire therein adapted to radiate heat upwardly. and transverse positions of insulating material supporting said work and preventing the paper coming too close to the same.

10. A combination with a printing couple, of an adjacent platform to receive the printed sheets, a long narrow box-like member open above and below and positioned resistance wire within said box below the width of the sheet operated on by the top thereof, and intermediately supported couple, said member'opening upwardly, a 10 by said partitions. resistance wire within said member, and

11. A combination with a printing'couple, means for supporting wire below the top of 5 a platform adjacent the couple to receive the member.

the printed sheets, a long narrow box-like In testimony whereof, I hereunto aifix my member between the couple and said platsignature. form having a length equivalent to the RUDOLF NITCH. 

